Gigabit Ethernet has been regarded as a huge breakthrough of telecom industry by offering speeds of up to 100Mbps. Gigabit Ethernet is a standard for transmitting Ethernet frames at a rate of a gigabit per second. There are five physical layer standards for Gigabit Ethernet using optical fiber (1000BASE-X), twisted pair cable (1000BASE-T), or shielded balanced copper cable (1000BASE-CX). 1000BASE-LX and Cisco 1000BASE-SX SFP are two common types of optical transceiver modules in the market. Today’s topic will be a brief introduction to 1000BASE-LX and 1000BASE-SX SFP transceivers

1000BASE in these terms refers to a Gigabit Ethernet connection that uses the unfiltered cable for transmission. "X" means 4B/5B block coding for Fast Ethernet or 8B/10B block coding for Gigabit Ethernet. "L" means long-range single- or multi-mode optical cable (100 m to 10 km). “S” means short-range multi-mode optical cable (less than 100 m)

1000BASE-SX

1000BASE-SX is a fiber optic Gigabit Ethernet standard for operation over multi-mode fiber using a 770 to 860 nanometer, near infrared (NIR) light wavelength. The standard specifies a distance capability between 220 meters and 550 meters. In practice, with good quality fiber, optics, and terminations, 1000BASE-SX will usually work over significantly longer distances. This standard is highly popular for intra-building links in large office buildings, co-location facilities and carrier neutral internet exchanges. 1000BASE-SX SFP works at 850nm wavelength and used only for the purposed of the multimode optical fiber with an LC connector. 1000BASE-SX SFP traditional 50 microns of multimode optical fiber link is 550 meters high and 62.5 micron fiber distributed data interface (FDDI) multimode optical fiber is up to 220 meters. Take EX-SFP-1GE-SX as an example, this SX fiber transceiver supports DOM function and the maximum distance of the SX SFP is usually 550 m. The 1000Base-SX standard supports the multimode fiber distances shown in table 1

1000BASE-LX

Specified in IEEE 802.3 Clause 38, 1000BASE-LX is a type of standard for implementing Gigabit Ethernet networks. The "LX" in 1000BASE-LX stands for long wavelength, indicating that this version of Gigabit Ethernet is intended for use with long-wavelength transmissions (1270-1355 nm) over long cable runs of fiber optic cabling. 1000BASE-LX can run over both single mode fiber and multimode fiber with a distance as high as 5 km and 550 m, respectively. For link distances greater than 300 m, the use of a special launch conditioning patch cord may be required. 1000BASE-LX is supposed mainly for connecting high-speed hubs, Ethernet switches, and routers together in different wiring closets or buildings using long cabling runs, and developed to support longer-length multimode building fiber backbones and single-mode campus backbones. Brocade E1MG-LX-OM is Brocade 1000BASE-LX SFP, this LX single-mode transceiver operates over a wavelength of 1310nm for 10 km.Please visit:www.oemfibers.com

What's SFP-10G-SR

Cisco SFP-10G-SR SFP+ transceiver is compliant with the 10GBASE-SR trendy. It’s miles warm-swappable input/output tool which permits a 10 Gigabit Ethernet port to hyperlink 300m in a fiber optic network. The SFP-10G-SR offers clients a huge sort of 10 Gigabit Ethernet connectivity options for statistics middle, company wiring closet, and carrier issuer delivery programs

Due to the fact it really is hot-swappable and MSA compliant, the Cisco SFP-10G-SR transceiver may be plugged immediately into any Cisco SFP+ based transceiver port, without the need to power down the switch. This functionality makes actions, add-ons, and exchanges short and painless. these modules also characteristic virtual Optical tracking (DOM) functionality which allows for tracking of the sign electricity, the temperature of the SFP, and the transceiver voltage

The SFP-10G-SR 10GBase-SR module supports link lengths up to 300 meters on multimode fiber. The SFP-10G-SR requires at least OM3 fiber

What is SFP-10G-LR

SFP-10G-LR is generally standard for a Cisco 10GBASE-LR SFP+ module. Cisco SFP-10G-LR supports popular single-mode fiber with a link distance of 10 kilometers. The SFP-10G-LR is usually compliant with the 10GBase-LR trendy and supports up to 10 km of single mode fiber with a 1310 nm laser. LR additionally has no minimum distance, so it is also suitable for short distances on single mode fiber. This 10GBASE-LR SFP+ transceiver module transmits data at speeds of up to 10 gigabits per second, making it ideal for connectivity needs in large data centers, enterprise wiring closets, large campus and metro area networks

SFP-10G-SR vs SFP-10G-LR , What's the Similarity and difference

SFP-10G-SR is particularly used for the short distance 10G application over multimode fiber, while SFP-10G-LR is ideal for long reach 10G Ethernet link over single mode fiber, After the evaluation, have you known the similarity and difference between SFP-10G-SR vs SFP-10G-LR , Do you know how to choose the SFP+ module for your network? It definitely relies upon on your real needs. As a reliable SFP+ transceiver supplier dealer, OEMfibers is your best choice for Cisco compatible SFP-10G-SR, SFP-10G-LR SFP+ modules. please visit www.OEMfibers.com

Product overview

The Cisco 100GBASE CFP modules offer customers 100 Gigabit Ethernet connectivity options for data center networking, enterprise core aggregation, and service provider transport applications

Features and benefits

Main features of Cisco 100GBASE CFP modules include

Supports 100GBASE Ethernet

Hot-swappable input-output device that plugs into an Ethernet CFP port of a Cisco switch or router

Provides flexibility of interface choice

Supports "pay-as-you-populate" model

Supports Digital Optical Monitoring (DOM)

Supports the Cisco quality identification (ID) feature that enables a Cisco switch to identify whether the module is certified and tested by Cisco

Cisco CFP-100G-LR4

The Cisco 100GBASE-LR4 CFP module supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652). 100 Gigabit Ethernet signal is usually carried over four wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device

Cisco CFP-100G-SR10

The Cisco 100GBASE-SR10 CFP module supports link lengths of 100 meters and 150 meters respectively on laser-optimized OM3 and OM4 multifiber cables. It primarily allows high- bandwidth 100-gigabit links over 24-fiber ribbon cables terminated with MPO/MTP-24 connectors. It can also be used in 10 x 10 Gigabit Ethernet mode along with ribbon to duplex fiber breakout cables for connectivity to ten 10GBASE-SR optical interfaces. Maximum channel insertion loss allowed is respectively 1.9 dB over 100m of OM3 cable or 1.5 dB over 150m of OM4 cable

Cisco CFP-100G-ER4

The Cisco 100GBASE-ER4 CFP module can support link lengths up to 40 kilometers on standard duplex single- mode fiber (SMF, G.652) terminated with SC/PC optical connectors. 100 Gigabit Ethernet signal is definitely carried over four wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within these devices. The Cisco 100GBASE-ER4 CFP module meets the IEEE 802.3ba requirements for 100GBASE-ER4 performance and also supports Digital Optical Monitoring (DOM) of the transmit-and-receive optical signal levels

The CFP module is a hot pluggable form factor designed for optical networking applications. CFP is usually acronym from 100G (C = 100 in Roman numerals; Centum) Form factor Pluggable. As name suggests, CFP is introduced to serve as optical transceiver for 100G interfaces. There are several CFP types introduced - CFP, CFP2 and CFP4, but let’s begin with general CFP architecture. General CFP architecture of CFP divides in two parts - Electrical interface interacting with equipment line card interface and optical line interface

From equipment line card electrical interface aspect CFP has several “M-Lines” with are working 10Gbps speed and separate management interface used for clock & signaling data. If CFP is definitely working 100GBase-LR4 mode, then it has 10 x 10Gbps M-Lines, if 40GBase-LR4 mode, then 4 x 10Gbps M-Lines. So called “Gear Box” is electrical 10:4 Mux/DeMux module aggregating up to 10 M-Line interfaces in maximum 4 N-Line interfaces. In case of 100GBase-LR4 each N-Line speed can be 25Gbps and in case of 40GBase-LR4 N-Line speed is 10Gbps. Each N- Line is converted to optical signal with different wavelength and all four wavelengths are transmitted to CFP line interface using built in passive optical multiplexers

CFP form factor is oldest from CFP family and it has current MSA (Multi Source Agreement) Rev 1.4. It can support both - 100GBase-X and 40GBase-X, and it’s general principle is certainly following

CFP electrical interface for 100G transmission is called CAUI - C (it again represents Roman Centum for 100G) Attachment Unit Interface. CAUI interface was standardized by IEEE802.3ba - Annex 83A, defining that CAUI interface is a parallel electrical interface with each lane running at a nominal rate of 10.3125 Gbps

The 802.3bm standard was approved. The 802.3bm standard specifies four-lane chip-to-module and chip-to-chip electrical specification (CAUI-4). In new version of CAUI-4 interface are 4 M-Lines, each running speeds 25.78 Gbps for 100G Ethernet and 27.95 Gbps for SONET/SDH OTU4.Know more:www.oemfibers.com

Let’s apply this model to the cost of optic transceivers. There are only so many transceiver companies with the manufacturing, engineering, and quality control to make the world go round: Avago, Finisar, and Lumentum (formerly JDSU). So when a networking company is trying to sell you an optic, it’s typically one of these three

Let’s dissect the Cisco SFP-10G-SR transceiver module, which lists for $1000 (I’m sorry, $995)

Cisco doesn’t make cables or optics, so they go to the people who do. Instead of relying on one ODM, they use two, and another two for their telco line, for price guarantees and supply assurances. So how much does a 10GB SFP+ SR optic cost? It turns out around $85 + some margin, bringing the cost to $95

However, Cisco doesn’t want some ODM’s name on the part. They want the Cisco logo on the part, along with the Cisco logo on the finish cap, some branding on the ESD wrapper, tissue paper, stickers, etc….(ok, ok, no tissue paper or stickers, but you get my point)

This re-branding now brings the part to over $600. Bring in the distributors: $800. And now, the resellers: $1000. Meaning, if Cisco sells this part at MSRP, it makes $500 in profit on a $100 part

What if we bought this product directly without the OEM rebranding? $95 plus distributor + reseller yields $150 with 2-day free shipping on OEMfibers.com

100GBASE-SR4 VS 100GBASE-SR10: Form Factors Comparison

CFP is the typical representative form factor of 100GBASE-SR10. It is specified by a MSA (Multi-Source Agreement) between competing manufacturers. The CFP was designed after the SFP (Small Form-Factor Pluggable) interface, but is significantly larger to support 100 Gbps, using 10 x 10Gbps lanes

QSFP28 may be the latest 100G form factor. QSFP28 utilizes four 25G electrical lanes each to aid the latest 100/50/25G transceivers and interconnects. Thus, it is the representative form factor of 100GBASE-SR4

100GBASE-SR4 VS 100GBASE-SR10: Size Comparison

Transceivers with Cisco QSFP-100G-SR4-S and 100GBASE-SR10 interface respectively correspond to QSFP28 and CFP. Thus they have a significant difference in size.CFP is much larger than QSFP28. Obviousely, CFP is not much suitable for high density applications. In contrast, QSFP28 increases front-panel density and decrease power and price per bit

100GBASE-SR4 VS 100GBASE-SR10: Cables & Connectors Options

Both 100GBASE-SR4 and 100GBASE-SR10 optics use laser optimized multimode fiber (OM3/OM4) for transmission. But 100GBASE-SR4 optics (such as Cisco 100G-QSFP28-SR4) uses a 12-fiber standard QSFP MPO/MTP cable for connectivity (4 Tx and 4 Rx, each lane providing 25 Gbps of throughput) while 100GBASE-SR10 optics use a 2×12-fiber or 24-fiber strand MPO/MTP cable for connectivity (10 Tx and 10 Rx, each lane providing 10 Gbps of throughput)

Because optics with 100GBASE-SR4 and Cisco CFP-100G-SR10 interface can be respectively breakout to 4×25 Gbps and 10×10 Gbps, it is easy to upgrade from 25GbE/10 GbE to 100 GbE using MPO/MTP to LC harness cable.Know more:www.oemfibers.com

MGBSX1 :1000BASE-SX SFP transceiver

MGBSX1 is a hot pluggable 1000BASE transceiver invented by Cisco. The 1000BASE-SX standard optics are developed to support lower cost multi-mode fiber runs in horizontal and shorter-length backbone applications. The MGBSX1 transceiver offers the ability to tap into faster networking speeds using fiber optic cabling. It supports dual data-rate of around 1 Gbps, with its operating temperature ranging from 32º to 158ºF (namely, 0º to 70ºC). The industry-standard Cisco Small Form-factor Pluggable Gigabit Interface Converter is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. The NGBSX1 SFP is compatible with the IEEE 802.3z 1000BASE-SX standard and operates on 50 micrometer multimode fiber links up to 550m and on 62.5 micrometer FDDI-grade multimode fibers up to 220m. More importantly, installing this module is as easy as sliding it into an accompanying port on a compatible Cisco switch.

MGBLH1 :1000BASE-LH SFP transceiver

MGBLH1 is also a 1000BASE SFP transceiver. However, it differs from MGBSX1 in that LH stands for long haul. Many vendors use LH for certain SFP modules, this SFP type is similar with the other SFPs in basic working principle and size. However, LH isn’t a Gigabit Ethernet standard, yet works with 1000BASE-LX standard. The MGBLH1 transceiver module provides a low cost high-performance connection. Compliant with specifications of SFP transceiver MSA specification, 1000BASE-LH SFP operates a distance up to 70km over single-mode fiber. Cisco MGBLH1 1000BASE-LH SFP covers a link length of 40km that make itself perfect for long-reach application. Morever, The MGBLH1 transceiver provided by OEMfibers is individually tested on a full range of Cisco Linksys equipment and passes the monitoring of OEMfibers.com intelligent quality control system

The large diameter core of multimode fiber increases the light reflection created as light travelling. Because of the high dispersion and attenuation rate with the multimode fiber, the quality of the signal is usually reduced over long distances. Therefore, the MGBSX1 transceiver is typically used for short distance, data and audio/video applications in LANs. Oppositely, MGBLH1 can be applied to long distance transmission. However, the actual distance will vary based on fiber plant and operating environment

There are a variety of resources to have the most out of technology budget, especially when it involves find the Cisco 1000BASE-T SFP modules either for brand new, refurbished, or carefully used. What exactly are the best methods to see them for a more inexpensive price

Online Retailers

Trusted online retailers with warehouses not merely provide consumer-side purchasing with modules and networking hardware, they may also be a very important asset to all or any types of companies seeking to spend less overall on gear. There are trusted online retailers that provide almost as high as 90% discounts and price reductions. You need to be cautious with regards to certain warehouses because they may have huge savings however the parts might be used or not of the best quality

Certified Sellers

Certified sellers, or re-sellers, may offer completely new or refurbished modules with great prices. Besides, they have professionals who might help you with all your technology questions and ensure that you obtain the very best deal

Third-Party Companies

In fact, there are various third party vendors to manufacture compatible SFP modules , such as for example OEMfibers.com. Many individuals are confused about whether I will use 3rd party SFP modules. Most "alternative party" transceivers are created and assembled in exactly the same plants assembling officially-branded transceivers. There is nearly no huge difference between the official Cisco transceiver and a third-party plug, apart from the branding and about 2 hundred to some thousand bucks. And today, using third party SFP modules appears to a growing number of popular, as much 3rd party SFP module suppliers are providing top quality and reliable third party SFP modules with low prices. Besides, third-party SFPs is often as reliable as official OEM products

What will be the characteristics of using 25G high-speed cable and 25G active optical cable 

1.25G SFP28 DAC high speed cable

25G high-speed cable can support transmission rates as high as 25Gbps, which is greater than traditional copper cables

25G active fiber optic cable for 25G and 10G Ethernet, high-capacity IO and SFP+ interfaces, data center and rack-to-rack connectivity

2.25G SFP28 AOC active optical cable

25G active fiber optic cable is one-half and one-quarter of the 25G high-speed cable, so 25G active fiber optic cable is a lot lighter than 25G high-speed cable; no tools upgrade is necessary, 25G active optical cable has up to 25G 25Gbps throughput; 25G active optical cable offers better transmission performance and bit error rate, BER can reach 10-15; 25G active optical cable provides lower transmission power on the machine link

25G DAC high speed cable and 25G AOC active cable application

25G high-speed cables are mainly utilized in switches/routers/HBAs, servers and data storage devices, 40Gbs/100GBS Ethernet, and Fibre Channel

25G active fiber optic cable for 25G and 10G Ethernet, high-capacity IO and SFP+ interfaces, data center and rack-to-rack connectivity

In addition to the above three main technical parameters, the Juniper EX-SFP-10GE-LR gets the following basic concepts, which just need to be understood briefly

 Laser category: The laser is the core device in the optical transceiver. It injects current in to the semiconductor material and emits laser light through the photon oscillation and gain of the resonant cavity. At the moment, the mostly used lasers are FP and DFB lasers. The difference between them is that the semiconductor materials and resonant cavity structure will vary. The cost of DFB lasers is a lot more costly than that of FP lasers. Optical transceiver with a transmission distance of significantly less than 40KM generally use FP lasers; The optical transceiver with a transmission distance ≥40KM generally use DFB lasers

 Loss and dispersion: Loss may be the lack of light energy because of the absorption, scattering and leakage of the medium when light is transmitted in the optical fiber. This portion of the energy is dissipated at a certain rate as the transmission distance increases. The generation of chromatic dispersion is principally due to the unequal speed of electromagnetic waves of different wavelengths when propagating in the same medium, which in turn causes the various wavelength components of the optical signal to reach at the receiving end at differing times because of the accumulation of transmission distance, leading to pulse broadening and inability to tell apart the signal value. Both of these parameters mainly affect the transmission distance of the optical transceiver. In the actual application process, the link loss of the 1310nm optical transceiver is generally calculated at 0.35dBm/km, and the hyperlink lack of the 1550nm optical transceiver is normally calculated at 0.20dBm/km, and the calculation of the dispersion value Very complicated, generally limited to reference

 Transmitting optical power and getting sensitivity: Transmitting optical power refers to the output optical power of the source of light at the transmitting end of the optical transceiver, and receiving sensitivity identifies the minimum received optical power of the optical transceiver at a particular rate and little bit error rate. The units of the two parameters are dBm (meaning decibel milliwatt, logarithmic form of power unit mw, the calculation formula can be 10lg, 1mw is changed into 0dBm), which are mainly utilized to define the transmission distance of the merchandise, different wavelengths, transmission rates and The optical transmitting power and getting sensitivity of the optical transceiver of the transmission distance changes, as long as the transmission distance could be ensured

The service life of the optical transceiver: the international uniform standard, 7X24 hours of uninterrupted work for 50,000 hours (equal to 5 years

 Optical fiber interface: HP J9151A Modules are all LC interfaces, GBIC optical transceiver are SC interfaces, and other interfaces consist of FC and ST

 Working temperature: 0~+70℃; storage temperature: -45~+80℃; working voltage: 3.3V; working level: TTL/PECL/CML/LVDS.Learn:www.oemfibers.com